$ git clone -n https://src.fedoraproject.org/rpms/rust-gdk-pixbuf.git /var/lib/mock/f41-build-side-1-2907293-34727/root/chroot_tmpdir/scmroot/rust-gdk-pixbuf
Cloning into '/var/lib/mock/f41-build-side-1-2907293-34727/root/chroot_tmpdir/scmroot/rust-gdk-pixbuf'...
$ git fetch origin 720d56d7ebcbf8abea82bb7c95aa211010082d8a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gdk-pixbuf
 * [new ref]         720d56d7ebcbf8abea82bb7c95aa211010082d8a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 720d56d Update to version 0.20.4; Fixes RHBZ#2314864