$ git clone -n https://src.fedoraproject.org/rpms/yaksa.git /var/lib/mock/f45-build-39196-732/root/chroot_tmpdir/scmroot/yaksa
Cloning into '/var/lib/mock/f45-build-39196-732/root/chroot_tmpdir/scmroot/yaksa'...
$ git fetch origin 108ac0c79661ffb455e165f745327a64bbe595da:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/yaksa
 * [new ref]         108ac0c79661ffb455e165f745327a64bbe595da -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 108ac0c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild