$ git clone -n https://src.fedoraproject.org/rpms/perl-IPC-ShareLite.git /var/lib/mock/f41-build-815996-149916/root/chroot_tmpdir/scmroot/perl-IPC-ShareLite
Cloning into '/var/lib/mock/f41-build-815996-149916/root/chroot_tmpdir/scmroot/perl-IPC-ShareLite'...
$ git fetch origin b508f995434ff0f1c88405a31bcee894bc2b5388:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-IPC-ShareLite
 * [new ref]         b508f995434ff0f1c88405a31bcee894bc2b5388 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b508f99 Perl 5.40 rebuild