$ git clone -n https://src.fedoraproject.org/rpms/gromacs.git /var/lib/mock/f39-build-1641611-40197/root/chroot_tmpdir/scmroot/gromacs
Cloning into '/var/lib/mock/f39-build-1641611-40197/root/chroot_tmpdir/scmroot/gromacs'...
$ git fetch origin 148e37fd1c44edf6cb246cd6c8fcb363fbbba4b3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gromacs
 * [new ref]         148e37fd1c44edf6cb246cd6c8fcb363fbbba4b3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 148e37f Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild