$ git clone -n https://src.fedoraproject.org/rpms/rust-uluru.git /var/lib/mock/f45-build-45827-828/root/chroot_tmpdir/scmroot/rust-uluru
Cloning into '/var/lib/mock/f45-build-45827-828/root/chroot_tmpdir/scmroot/rust-uluru'...
$ git fetch origin 6b6c26fc8756c5f628d1d06e34737217a61f1d65:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-uluru
 * [new ref]         6b6c26fc8756c5f628d1d06e34737217a61f1d65 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6b6c26f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild