$ git clone -n https://src.fedoraproject.org/rpms/perl-Capture-Tiny.git /var/lib/mock/f45-build-22182-590/root/chroot_tmpdir/scmroot/perl-Capture-Tiny
Cloning into '/var/lib/mock/f45-build-22182-590/root/chroot_tmpdir/scmroot/perl-Capture-Tiny'...
$ git fetch origin e5f36d8fb3106766bf6a13c759a75103bec2989f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Capture-Tiny
 * [new ref]         e5f36d8fb3106766bf6a13c759a75103bec2989f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e5f36d8 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild