$ git clone -n https://src.fedoraproject.org/rpms/gambit-c.git /var/lib/mock/f39-build-1908649-42872/root/chroot_tmpdir/scmroot/gambit-c
Cloning into '/var/lib/mock/f39-build-1908649-42872/root/chroot_tmpdir/scmroot/gambit-c'...
$ git fetch origin fdd3c20ba9e01ad252fc7c0441f9a4cd4557eb57:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gambit-c
 * [new ref]         fdd3c20ba9e01ad252fc7c0441f9a4cd4557eb57 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fdd3c20 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild