$ git clone -n https://src.fedoraproject.org/rpms/docbook5-style-xsl.git /var/lib/mock/f41-build-side-1-2818611-33024/root/chroot_tmpdir/scmroot/docbook5-style-xsl
Cloning into '/var/lib/mock/f41-build-side-1-2818611-33024/root/chroot_tmpdir/scmroot/docbook5-style-xsl'...
$ git fetch origin 78a0e3423d45c7e6b66df833f6a1877639bbbf26:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/docbook5-style-xsl
 * [new ref]         78a0e3423d45c7e6b66df833f6a1877639bbbf26 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 78a0e34 Drop unused tools directory, limit Java dependencies