$ git clone -n https://src.fedoraproject.org/rpms/gearhead1.git /var/lib/mock/f40-build-798382-141890/root/chroot_tmpdir/scmroot/gearhead1
Cloning into '/var/lib/mock/f40-build-798382-141890/root/chroot_tmpdir/scmroot/gearhead1'...
$ git fetch origin 32690b66db934f46c2e6693815c9af2e98ce0c68:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gearhead1
 * [new ref]         32690b66db934f46c2e6693815c9af2e98ce0c68 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 32690b6 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild