$ git clone -n https://src.fedoraproject.org/rpms/kalk.git /var/lib/mock/f39-build-1870202-42649/root/chroot_tmpdir/scmroot/kalk
Cloning into '/var/lib/mock/f39-build-1870202-42649/root/chroot_tmpdir/scmroot/kalk'...
$ git fetch origin 3c93e64c8033371a676d5420ffc8cd29c04cefbe:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kalk
 * [new ref]         3c93e64c8033371a676d5420ffc8cd29c04cefbe -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3c93e64 23.08.3