$ git clone -n https://src.fedoraproject.org/rpms/rust-xkbcommon.git /var/lib/mock/f45-build-46257-832/root/chroot_tmpdir/scmroot/rust-xkbcommon
Cloning into '/var/lib/mock/f45-build-46257-832/root/chroot_tmpdir/scmroot/rust-xkbcommon'...
$ git fetch origin b2b65bcacdbf45c33e202ff4d413fe8b627ad334:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-xkbcommon
 * [new ref]         b2b65bcacdbf45c33e202ff4d413fe8b627ad334 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b2b65bc Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild