$ git clone -n https://src.fedoraproject.org/rpms/rust-asn1_derive.git /var/lib/mock/f45-build-40179-769/root/chroot_tmpdir/scmroot/rust-asn1_derive
Cloning into '/var/lib/mock/f45-build-40179-769/root/chroot_tmpdir/scmroot/rust-asn1_derive'...
$ git fetch origin 275bb87b6b65328a9fa3e7cfb3755b5b38fbb4cb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-asn1_derive
 * [new ref]         275bb87b6b65328a9fa3e7cfb3755b5b38fbb4cb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 275bb87 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild