$ git clone -n https://src.fedoraproject.org/rpms/perl-File-Fetch.git /var/lib/mock/f41-build-815683-149688/root/chroot_tmpdir/scmroot/perl-File-Fetch
Cloning into '/var/lib/mock/f41-build-815683-149688/root/chroot_tmpdir/scmroot/perl-File-Fetch'...
$ git fetch origin 909716721b23f9c5c0f492402a788b3fd611f686:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-File-Fetch
 * [new ref]         909716721b23f9c5c0f492402a788b3fd611f686 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9097167 Increase release to favour standalone package