$ git clone -n https://src.fedoraproject.org/rpms/rust-glib-build-tools.git /var/lib/mock/f40-build-2641420-66430/root/chroot_tmpdir/scmroot/rust-glib-build-tools
Cloning into '/var/lib/mock/f40-build-2641420-66430/root/chroot_tmpdir/scmroot/rust-glib-build-tools'...
$ git fetch origin f157d91f37d555c9800e5226de7a9c86d54a9655:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-glib-build-tools
 * [new ref]         f157d91f37d555c9800e5226de7a9c86d54a9655 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f157d91 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild