$ git clone -n https://src.fedoraproject.org/rpms/google-gson.git /var/lib/mock/f39-build-1567762-37600/root/chroot_tmpdir/scmroot/google-gson
Cloning into '/var/lib/mock/f39-build-1567762-37600/root/chroot_tmpdir/scmroot/google-gson'...
$ git fetch origin 761b92c91067a96af09c3e1af357848cbcb522ef:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/google-gson
 * [new ref]         761b92c91067a96af09c3e1af357848cbcb522ef -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 761b92c Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild