$ git clone -n https://src.fedoraproject.org/rpms/rubygem-dalli.git /var/lib/mock/f45-build-34882-692/root/chroot_tmpdir/scmroot/rubygem-dalli
Cloning into '/var/lib/mock/f45-build-34882-692/root/chroot_tmpdir/scmroot/rubygem-dalli'...
$ git fetch origin 17fa6143800a45b6d3495749f9a9b0485fd6f2f8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-dalli
 * [new ref]         17fa6143800a45b6d3495749f9a9b0485fd6f2f8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 17fa614 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild