$ git clone -n https://src.fedoraproject.org/rpms/rubygem-ttfunk.git /var/lib/mock/f45-build-35393-695/root/chroot_tmpdir/scmroot/rubygem-ttfunk
Cloning into '/var/lib/mock/f45-build-35393-695/root/chroot_tmpdir/scmroot/rubygem-ttfunk'...
$ git fetch origin f7bcbb0f152d7afc77de800c5b5e085ca69bcc05:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-ttfunk
 * [new ref]         f7bcbb0f152d7afc77de800c5b5e085ca69bcc05 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f7bcbb0 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild