$ git clone -n https://src.fedoraproject.org/rpms/kf5-mailimporter.git /var/lib/mock/f39-build-1927628-43057/root/chroot_tmpdir/scmroot/kf5-mailimporter
Cloning into '/var/lib/mock/f39-build-1927628-43057/root/chroot_tmpdir/scmroot/kf5-mailimporter'...
$ git fetch origin f4de00e236fdc16e4c614b6cd968e9e93cdc81ca:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-mailimporter
 * [new ref]         f4de00e236fdc16e4c614b6cd968e9e93cdc81ca -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f4de00e 23.08.3