$ git clone -n https://src.fedoraproject.org/rpms/rust-gdk-sys0.15.git /var/lib/mock/f40-build-2036539-48038/root/chroot_tmpdir/scmroot/rust-gdk-sys0.15
Cloning into '/var/lib/mock/f40-build-2036539-48038/root/chroot_tmpdir/scmroot/rust-gdk-sys0.15'...
$ git fetch origin 9a56a4d0b3a153747acb43b1525568fe470f89bb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gdk-sys0.15
 * [new ref]         9a56a4d0b3a153747acb43b1525568fe470f89bb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9a56a4d Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild