The phrase "first shovel" refers to being the first one to start or initiate something, like a project or task. It means being the one who takes the first step or takes the lead in getting something started. Full definition
When the votes were counted, the Jamesport nuclear project, without the first shovel in the ground, was dealt a resounding defeat. (suffolktimes.timesreview.com)
By James Briggs A proposed development has prompted Madison officials to debate whether it's appropriate to set ground rules for future tenants before the first shovel hits the ground on projects. (dailyreporter.com)
Even if the panel backs the proposal, the neighborhood's political leaders give their blessing and city agencies sign off on the guidelines, there are many more hurdles to clear before the first shovel is in the ground on Delancey Street. (thelodownny.com)