$ git clone -n https://src.fedoraproject.org/rpms/kf5-mailcommon.git /var/lib/mock/f40-build-788230-135075/root/chroot_tmpdir/scmroot/kf5-mailcommon
Cloning into '/var/lib/mock/f40-build-788230-135075/root/chroot_tmpdir/scmroot/kf5-mailcommon'...
$ git fetch origin 67d4fcc1f2c08ff95df44faff0917542694568b9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-mailcommon
 * [new ref]         67d4fcc1f2c08ff95df44faff0917542694568b9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 67d4fcc 23.08.5