$ git clone -n https://src.fedoraproject.org/rpms/perl-Unicode-Collate.git /var/lib/mock/f45-build-27330-622/root/chroot_tmpdir/scmroot/perl-Unicode-Collate
Cloning into '/var/lib/mock/f45-build-27330-622/root/chroot_tmpdir/scmroot/perl-Unicode-Collate'...
$ git fetch origin 1ba19496576b1ec5417fd5e1543f85ed34f0acae:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Unicode-Collate
 * [new ref]         1ba19496576b1ec5417fd5e1543f85ed34f0acae -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1ba1949 Increase release to favour standalone package