$ git clone -n https://src.fedoraproject.org/rpms/rust-libheif-sys.git /var/lib/mock/f40-build-2150510-50897/root/chroot_tmpdir/scmroot/rust-libheif-sys
Cloning into '/var/lib/mock/f40-build-2150510-50897/root/chroot_tmpdir/scmroot/rust-libheif-sys'...
$ git fetch origin 10a2019222645d2f2f9c82520c7e2ced43c382c7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-libheif-sys
 * [new ref]         10a2019222645d2f2f9c82520c7e2ced43c382c7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 10a2019 Update to 1.16.2