$ git clone -n https://src.fedoraproject.org/rpms/kf5-mailimporter.git /var/lib/mock/f40-build-787596-134873/root/chroot_tmpdir/scmroot/kf5-mailimporter
Cloning into '/var/lib/mock/f40-build-787596-134873/root/chroot_tmpdir/scmroot/kf5-mailimporter'...
$ git fetch origin 6c5e0cd0be16b792b52a0b7853f0e4482a01d0da:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-mailimporter
 * [new ref]         6c5e0cd0be16b792b52a0b7853f0e4482a01d0da -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6c5e0cd 23.08.5