$ git clone -n https://src.fedoraproject.org/rpms/rust-gtk-sys0.15.git /var/lib/mock/f40-build-2100778-50482/root/chroot_tmpdir/scmroot/rust-gtk-sys0.15
Cloning into '/var/lib/mock/f40-build-2100778-50482/root/chroot_tmpdir/scmroot/rust-gtk-sys0.15'...
$ git fetch origin 03c6f8965f7589a02eb4ae96c39216d89a5a8158:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gtk-sys0.15
 * [new ref]         03c6f8965f7589a02eb4ae96c39216d89a5a8158 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 03c6f89 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild