$ git clone -n https://src.fedoraproject.org/rpms/rust-enum-as-inner.git /var/lib/mock/f45-build-41441-782/root/chroot_tmpdir/scmroot/rust-enum-as-inner
Cloning into '/var/lib/mock/f45-build-41441-782/root/chroot_tmpdir/scmroot/rust-enum-as-inner'...
$ git fetch origin c45d8fbdde72619ac65b0b3388f2bc4a6ca96387:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-enum-as-inner
 * [new ref]         c45d8fbdde72619ac65b0b3388f2bc4a6ca96387 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c45d8fb Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild