$ git clone -n https://src.fedoraproject.org/rpms/half.git /var/lib/mock/f45-build-13324-449/root/chroot_tmpdir/scmroot/half
Cloning into '/var/lib/mock/f45-build-13324-449/root/chroot_tmpdir/scmroot/half'...
$ git fetch origin 5772154925933b3485e791ed1fb1dc2b75c3bb54:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/half
 * [new ref]         5772154925933b3485e791ed1fb1dc2b75c3bb54 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5772154 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild