$ git clone -n https://src.fedoraproject.org/rpms/hylafax+.git /var/lib/mock/f42-build-3348057-45005/root/chroot_tmpdir/scmroot/hylafax+
Cloning into '/var/lib/mock/f42-build-3348057-45005/root/chroot_tmpdir/scmroot/hylafax+'...
$ git fetch origin ea90cbd9712e8937ccd0c4be716bbe2f6ddfcf00:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/hylafax+
 * [new ref]         ea90cbd9712e8937ccd0c4be716bbe2f6ddfcf00 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ea90cbd Add explicit BR: libxcrypt-devel