$ git clone -n https://src.fedoraproject.org/rpms/docbook-style-xsl.git /var/lib/mock/f45-build-7997-372/root/chroot_tmpdir/scmroot/docbook-style-xsl
Cloning into '/var/lib/mock/f45-build-7997-372/root/chroot_tmpdir/scmroot/docbook-style-xsl'...
$ git fetch origin ac1406093de141ec2aab7bce066245b8d7012af1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/docbook-style-xsl
 * [new ref]         ac1406093de141ec2aab7bce066245b8d7012af1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ac14060 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild