$ git clone -n https://src.fedoraproject.org/rpms/rust-gsk4.git /var/lib/mock/f38-build-side-43-rust-devel-1401976-31182/root/chroot_tmpdir/scmroot/rust-gsk4
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1401976-31182/root/chroot_tmpdir/scmroot/rust-gsk4'...
$ git fetch origin 0b6300a738f2ad7e6b16cb4d51cb12625ff3064f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gsk4
 * [new ref]         0b6300a738f2ad7e6b16cb4d51cb12625ff3064f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0b6300a Update to version 0.7.3; Fixes RHBZ#2240344