$ git clone -n https://src.fedoraproject.org/rpms/yad.git /var/lib/mock/f45-build-39180-732/root/chroot_tmpdir/scmroot/yad
Cloning into '/var/lib/mock/f45-build-39180-732/root/chroot_tmpdir/scmroot/yad'...
$ git fetch origin e23f136b8c9adeeed77cf797abe67f25e46b5576:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/yad
 * [new ref]         e23f136b8c9adeeed77cf797abe67f25e46b5576 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e23f136 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild