$ git clone -n https://src.fedoraproject.org/rpms/rust-xkbcommon-dl.git /var/lib/mock/f45-build-46217-832/root/chroot_tmpdir/scmroot/rust-xkbcommon-dl
Cloning into '/var/lib/mock/f45-build-46217-832/root/chroot_tmpdir/scmroot/rust-xkbcommon-dl'...
$ git fetch origin c503a50177b1a71e752db4e336a139ad7e42386d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-xkbcommon-dl
 * [new ref]         c503a50177b1a71e752db4e336a139ad7e42386d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c503a50 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild