$ git clone -n https://src.fedoraproject.org/rpms/gearhead1.git /var/lib/mock/f40-build-2292402-56131/root/chroot_tmpdir/scmroot/gearhead1
Cloning into '/var/lib/mock/f40-build-2292402-56131/root/chroot_tmpdir/scmroot/gearhead1'...
$ git fetch origin cb9df2b4c32c06b9902ec29a24bcf9fc3f90c228:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gearhead1
 * [new ref]         cb9df2b4c32c06b9902ec29a24bcf9fc3f90c228 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cb9df2b Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild