$ git clone -n https://src.fedoraproject.org/rpms/perl-XML-LibXSLT.git /var/lib/mock/f45-build-27499-624/root/chroot_tmpdir/scmroot/perl-XML-LibXSLT
Cloning into '/var/lib/mock/f45-build-27499-624/root/chroot_tmpdir/scmroot/perl-XML-LibXSLT'...
$ git fetch origin 91d4e5c46c131228021684411debc436f93fd4bf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-XML-LibXSLT
 * [new ref]         91d4e5c46c131228021684411debc436f93fd4bf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 91d4e5c Perl 5.44 rebuild