$ git clone -n https://src.fedoraproject.org/rpms/perl-Try-Tiny.git /var/lib/mock/f45-build-27254-622/root/chroot_tmpdir/scmroot/perl-Try-Tiny
Cloning into '/var/lib/mock/f45-build-27254-622/root/chroot_tmpdir/scmroot/perl-Try-Tiny'...
$ git fetch origin cc0cf28a7bf82c30f9e05694a3ef678c1491d1f8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Try-Tiny
 * [new ref]         cc0cf28a7bf82c30f9e05694a3ef678c1491d1f8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cc0cf28 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild