$ git clone -n https://src.fedoraproject.org/rpms/kmail.git /var/lib/mock/f39-test-2571316-62245/root/chroot_tmpdir/scmroot/kmail
Cloning into '/var/lib/mock/f39-test-2571316-62245/root/chroot_tmpdir/scmroot/kmail'...
$ git fetch origin 65cbf5c398177cb7a774c9b2d9650ca2f5bf98c6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kmail
 * [new ref]         65cbf5c398177cb7a774c9b2d9650ca2f5bf98c6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 65cbf5c 23.08.5