$ git clone -n https://src.fedoraproject.org/rpms/perl-Data-UUID.git /var/lib/mock/f45-build-22999-595/root/chroot_tmpdir/scmroot/perl-Data-UUID
Cloning into '/var/lib/mock/f45-build-22999-595/root/chroot_tmpdir/scmroot/perl-Data-UUID'...
$ git fetch origin 1b4c92984fa6b47dad2849bc94d488ac90a0cc60:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Data-UUID
 * [new ref]         1b4c92984fa6b47dad2849bc94d488ac90a0cc60 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1b4c929 Perl 5.44 rebuild