$ git clone -n https://src.fedoraproject.org/rpms/gearhead1.git /var/lib/mock/f39-build-2456782-61439/root/chroot_tmpdir/scmroot/gearhead1
Cloning into '/var/lib/mock/f39-build-2456782-61439/root/chroot_tmpdir/scmroot/gearhead1'...
$ git fetch origin 16dedfd9c4cc5e0dc9e960bc0a11568bfbda4d89:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gearhead1
 * [new ref]         16dedfd9c4cc5e0dc9e960bc0a11568bfbda4d89 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 16dedfd Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild