$ git clone -n https://src.fedoraproject.org/rpms/perl-Sub-HandlesVia.git /var/lib/mock/f41-build-side-1-2781846-32532/root/chroot_tmpdir/scmroot/perl-Sub-HandlesVia
Cloning into '/var/lib/mock/f41-build-side-1-2781846-32532/root/chroot_tmpdir/scmroot/perl-Sub-HandlesVia'...
$ git fetch origin b5c99b9aa155aad4e53b4a8b88261a126651cc0b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Sub-HandlesVia
 * [new ref]         b5c99b9aa155aad4e53b4a8b88261a126651cc0b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b5c99b9 Work-around RHBZ#2310796.