$ git clone -n https://src.fedoraproject.org/rpms/mailimporter.git /var/lib/mock/f41-build-696692-12816/root/chroot_tmpdir/scmroot/mailimporter
Cloning into '/var/lib/mock/f41-build-696692-12816/root/chroot_tmpdir/scmroot/mailimporter'...
$ git fetch origin dcb57d028a1f5e0e5b4542bf06740c58767ca66c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mailimporter
 * [new ref]         dcb57d028a1f5e0e5b4542bf06740c58767ca66c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dcb57d0 24.05.0