$ git clone -n https://src.fedoraproject.org/rpms/yelp-xsl.git /var/lib/mock/f45-build-39256-733/root/chroot_tmpdir/scmroot/yelp-xsl
Cloning into '/var/lib/mock/f45-build-39256-733/root/chroot_tmpdir/scmroot/yelp-xsl'...
$ git fetch origin 1639146ad4cb875e4f41ae88275f9bab357f5ace:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/yelp-xsl
 * [new ref]         1639146ad4cb875e4f41ae88275f9bab357f5ace -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1639146 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild