$ git clone -n https://src.fedoraproject.org/rpms/rust-gdk-pixbuf0.16.git /var/lib/mock/f38-build-side-43-rust-devel-1416834-31457/root/chroot_tmpdir/scmroot/rust-gdk-pixbuf0.16
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1416834-31457/root/chroot_tmpdir/scmroot/rust-gdk-pixbuf0.16'...
$ git fetch origin 925898b06ed31d0c6c7b0ad5d4dd6439ab72148f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gdk-pixbuf0.16
 * [new ref]         925898b06ed31d0c6c7b0ad5d4dd6439ab72148f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 925898b Initial import (gdk-pixbuf 0.16 compat package)