$ git clone -n https://src.fedoraproject.org/rpms/perl-constant.git /var/lib/mock/f41-build-815704-149688/root/chroot_tmpdir/scmroot/perl-constant
Cloning into '/var/lib/mock/f41-build-815704-149688/root/chroot_tmpdir/scmroot/perl-constant'...
$ git fetch origin 12fe53abd7477eccd8b8942aeefb94cbc51460ea:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-constant
 * [new ref]         12fe53abd7477eccd8b8942aeefb94cbc51460ea -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 12fe53a Increase release to favour standalone package