$ git clone -n https://src.fedoraproject.org/rpms/rust-binascii.git /var/lib/mock/f45-build-40448-772/root/chroot_tmpdir/scmroot/rust-binascii
Cloning into '/var/lib/mock/f45-build-40448-772/root/chroot_tmpdir/scmroot/rust-binascii'...
$ git fetch origin f06792b104daa3fb454bd6e83241dcd473376754:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-binascii
 * [new ref]         f06792b104daa3fb454bd6e83241dcd473376754 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f06792b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild