$ git clone -n https://src.fedoraproject.org/rpms/docbook-style-xsl.git /var/lib/mock/f41-build-1072458-19725/root/chroot_tmpdir/scmroot/docbook-style-xsl
Cloning into '/var/lib/mock/f41-build-1072458-19725/root/chroot_tmpdir/scmroot/docbook-style-xsl'...
$ git fetch origin 6f8d69030f4c02b3496fa50ea413140953b679e6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/docbook-style-xsl
 * [new ref]         6f8d69030f4c02b3496fa50ea413140953b679e6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6f8d690 Eliminate use of obsolete %patchN syntax (#2283636)