$ git clone -n https://src.fedoraproject.org/rpms/rust-zvariant_utils2.git /var/lib/mock/f45-build-46388-834/root/chroot_tmpdir/scmroot/rust-zvariant_utils2
Cloning into '/var/lib/mock/f45-build-46388-834/root/chroot_tmpdir/scmroot/rust-zvariant_utils2'...
$ git fetch origin 16c68d88fb549136cdc4739aab44cbc7132f8d26:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-zvariant_utils2
 * [new ref]         16c68d88fb549136cdc4739aab44cbc7132f8d26 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 16c68d8 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild