$ git clone -n https://src.fedoraproject.org/rpms/rust-reborrow.git /var/lib/mock/f45-build-44399-813/root/chroot_tmpdir/scmroot/rust-reborrow
Cloning into '/var/lib/mock/f45-build-44399-813/root/chroot_tmpdir/scmroot/rust-reborrow'...
$ git fetch origin 973080221f7c3a0179c587f12d5b97d409da3b37:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-reborrow
 * [new ref]         973080221f7c3a0179c587f12d5b97d409da3b37 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9730802 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild