$ git clone -n https://src.fedoraproject.org/rpms/squid.git /var/lib/mock/f40-build-2309217-57338/root/chroot_tmpdir/scmroot/squid
Cloning into '/var/lib/mock/f40-build-2309217-57338/root/chroot_tmpdir/scmroot/squid'...
$ git fetch origin ded59a53104e787986fdd65b98a0e3f599b67d4b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/squid
 * [new ref]         ded59a53104e787986fdd65b98a0e3f599b67d4b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ded59a5 Remove gopher mention from SPEC file, since gopher support has been removed