$ git clone -n https://src.fedoraproject.org/rpms/rust-gdk4.git /var/lib/mock/f39-build-1538172-36390/root/chroot_tmpdir/scmroot/rust-gdk4
Cloning into '/var/lib/mock/f39-build-1538172-36390/root/chroot_tmpdir/scmroot/rust-gdk4'...
$ git fetch origin cc9ec248967306f5ac4dcf129585114689063d04:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gdk4
 * [new ref]         cc9ec248967306f5ac4dcf129585114689063d04 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cc9ec24 Update to version 0.7.3; Fixes RHBZ#2240342